Extremum-seeking-based fluctuation mitigation by E×B actuation in HELCAT

Extremum-seeking-based fluctuation mitigation by E×B actuation in HELCAT

We investigate active control of fluctuations via manipulation of flow profiles in a magnetized laboratory plasma device (HELCAT). Fluctuations and particle transport are monitored by electrostatic probes, and E×B flow profiles controlled via biased ring electrodes. A non-model-based optimization al...

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Bibliographische Detailangaben
Hauptverfasser: Qiaoqiao Wang, Schuster, E., Gilmore, M., Shuangwei Xie, Ware, A.
Format: Tagungsbericht
Sprache:eng
Schlagworte:
Cost function
Equations
Mathematical model
Plasma devices
Plasma measurements
Probes
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Beschreibung
Zusammenfassung:We investigate active control of fluctuations via manipulation of flow profiles in a magnetized laboratory plasma device (HELCAT). Fluctuations and particle transport are monitored by electrostatic probes, and E×B flow profiles controlled via biased ring electrodes. A non-model-based optimization algorithm is implemented to seek control inputs that minimize a cost function related to the fluctuation amplitude. The algorithm is also able to identify radial poloidal flow profiles associated with specific levels of RMS fluctuations.
ISSN:1085-1992
2576-3210
DOI:10.1109/CCA.2011.6044378